ASTM A409/A409M Type 201LN Introduce
ASTM A409/A409M Type 201LN is a type of steel that is used for high temperature and pressure applications. These applications include piping, valves, pressure vessels, and heat exchangers. The designations of ASTM A409/A409M Type 201LN are based on the chemical composition, mechanical properties, and manufacturing process of the materials. Machining is a process where materials are cut, shaped, or formed by machines to produce a desired product. Machining of ASTM A409/A409M Type 201LN steel requires special considerations due to its properties and designations, including its chemical composition, mechanical properties, and other special requirements.
Smelting temperature:1674°C - 1323°C
Application:Corrosion resistant or high temperature resistant large diameter welded austenitic stainless steel tube
ASTM A409/A409M Type 201LN Material Chemical Composition
The chemical composition of the ASTM A409/A409M Type 201LN steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.7500 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0450 |
| Nickel (Ni) | 4.0000 | 5.0000 |
| Nitrogen (N) | 0.1000 | 0.2500 |
| Manganese (Mn) | 6.4000 | 7.5000 |
| Copper (Cu) | - | 1.0000 |
| Chromium (Cr) | 16.0000 | 17.5000 |
| Carbon (C) | - | 0.0300 |
ASTM A409/A409M Type 201LN Material Mechanical Properties
The mechanical properties of the ASTM A409/A409M Type 201LN steel are as follows:
| YieldRp0.2 | ≤ 761 (MPa) |
| TeileRm | ≤ 427 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 134 |
ASTM A409/A409M Type 201LN Material Thermal Properties
The thermal performance parameters of the ASTM A409/A409M Type 201LN steel are as follows:
| Temperature (°C) | 33 | 677 | 471 |
| Modulus of elasticity (GPa) | - | 934 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 134 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 431 |